It does need highway driving to be able to complete the regen process. Internally, I'm not sure the other implications of tons of idling. I know in other diesels I've never had problems, but this is a different animal for sure.
Welcome @kevinfeco !
Hopefully someone here with a little more knowledge can help you out! Also, maybe this thread might help: https://www.ecodieselram.com/forum/threads/my-experience-with-glow-plug-issue.2595/
Welcome! It could very well stop up the DPF if the system isn't regening correctly.. it's a gamble really. But if the dealer is covering the issue perhaps just ride it out. I wouldn't take a road trip though.. :)
Hey @jrizzil
Perhaps this gentlemen can provide more information for you?
https://www.ecodieselram.com/forum/threads/my-experience-with-glow-plug-issue.2595/post-18513